Records show DC Metro’s crash avoidance system malfunctioned once before deadly June collision

September 2nd, 2009 FAA will change airspace rules over Hudson RiverNEWARK, N.J. — Federal aviation officials say they will change airspace rules over the Hudson River at New York City after a deadly crash last month.

August 18th, 2009 Putin is set to open Russia's air showZHUKOVSKY, Russia — Russia's largest and most important air show is getting under way, overshadowed by a bad economy, a terrorist attack and a deadly air force crash. Prime Minister Vladimir Putin is set to open the International Aviation and Space Show on Tuesday.

August 11th, 2009 NYC crash brings calls for tighter airspace rulesNEW YORK —The collision of a sightseeing helicopter and a small plane over New York's Hudson River has intensified pressure to tighten the rules governing one of the world's most crowded air corridors — a largely unregulated airspace some pilots compare to the Wild West. Among the ideas to improve safety: Assigning low-flying aircraft different altitudes, requiring them to carry collision-avoidance equipment or completely closing the area over the river.

July 23rd, 2009 NTSB: DC train system had chronic signal problemsWASHINGTON — The signaling system that detects a train on the tracks of Washington's transit system has been having problems for a year and a half in the area of a crash that killed nine, federal investigators said Thursday. The National Transportation Safety Board said records show the system on the track circuit had been intermittently malfunctioning, whether a train was present or not, since a piece of equipment was replaced in December 2007.

July 22nd, 2009 Metro: 'Anomalies' found, but DC rail system safeWASHINGTON — The Washington Metro has found at least six spots where signaling equipment designed to detect the presence of trains on the tracks has malfunctioned since a fatal crash last month. Metro says "anomalies" were found in six circuits other than the one at the crash site.

July 15th, 2009 DC's Metro signaling system still has problemsWASHINGTON — Federal investigators say the signaling system for Metro transit trains continues to fail periodically in the area of Washington, D.C., where a deadly train crash occurred. National Transportation Safety Board member Debbie Hersman told lawmakers Tuesday that investigators are replacing various pieces of equipment in an attempt to stop the problem near the Fort Totten station on Metro's red line.

July 14th, 2009 NTSB: Fatal Boston trolley crash preventableWASHINGTON — Investigators said Tuesday a fatal Boston trolley crash in May 2008 could have been prevented if an automated train control system had been in place. Trolley operator Terrese Edmonds, 24, died after her train sped through a red stop signal and rammed another in a crash in suburban Newton, Mass., that also injured seven passengers on the Massachusetts Bay Transportation Authority's Green Line.

July 3rd, 2009 Metro red line trains to resume normal speedsWASHINGTON — Metro officials say red line trains in greater Washington, D.C., will return to regular speeds this holiday weekend for the first time since a deadly crash. Nine people were killed and more than 70 injured June 22 when one train slammed into another train stopped on tracks.

July 3rd, 2009 Peru bus collision kills 23 near Lake TiticacaLIMA, Peru — Two buses crashed head-on Thursday on a mountain road near Lake Titicaca in Peru, killing at least 23 people and injuring 50 more, police said. The morning crash occurred in the Santa Lucia district, about an hour's drive from Lake Titicaca high in the Andes, a Puno state highway police officer told The Associated Press by phone.

July 1st, 2009 NTSB: DC train signal failed before crashWASHINGTON — Investigators say equipment that is supposed to detect stopped trains failed periodically in the days leading up to a deadly Metro transit train crash in Washington, D.C. Nine people were killed and more than 70 injured June 22 when a train slammed into another train stopped on tracks.

June 24th, 2009 Investigators to test automated DC train controlsWASHINGTON — Federal investigators are going to test the automated system that is meant prevent train crashes like the one in Washington, D.C., that killed nine people. Debbie Hersman of the National Transportation Safety Board says investigators are going have their first opportunity Wednesday to test the computerized signal system.

June 23rd, 2009 Over 60 people injured in collisionWASHINGTON — Over 60 passengers have been injured in the crash of two Metro trains. District of Columbia Fire Chief Dennis Rubin says that about 50 of the passengers fell into the quote — walking wounded — category of injuries.

May 9th, 2009 NTSB: Ariz. medical chopper crash pilots' faultFLAGSTAFF, Ariz. — The pilots of two medical helicopters that crashed in midair, killing seven people, are both to blame for failing to see and avoid each other near a hospital, federal investigators said Friday.

May 2nd, 2009 Court says FAA can't be held liable in Ill. crashCHICAGO — An appeals court says the Federal Aviation Administration can't be held financially responsible for the collision of two small planes that killed a popular Chicago radio personality nearly 10 years ago.

April 21st, 2009 WASHINGTON - Scientists have developed a new method for systematically identifying bugs in aircraft collision avoidance systems, high-speed train controls and other complex, computer-controlled devices, collectively known as cyber-physical systems (CPS). The approach, developed by Edmund M.